Patent · US Expired

Tetrachloroferrates of basic dyes

US5073634A · kind A · utility

2Cited by

2References

1Claims

0Family size

Assignee

BASF SE

Inventors

Johannes P. Dix · Schifferstadt, DE
Guenter Hansen · Ludwigshafen, DE
Hellmut Kast

Key dates

Filing date	May 1, 1990
Grant date	Dec 17, 1991
Priority date	—
Expiry date	May 1, 2010

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06P1/41
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Basic dyes of the formula EQU Chr.sup..sym.[FeCl.sub.4 ].sup..crclbar. where Chr.sup.a is a dye cation are useful for dyeing acrylonitrile polymers or acid-modified polyesters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.